LeCroy WaveMaster 8600A User Manual

X-Stream Operator’s Manual
WM-OM-E Rev I 383
The following table summarizes the determination of the local baseline and its separation when the
local feature is and is not the last identified before the right parameter cursor:
Local baseline and local baseline separation if last local feature
Baseline identified
peak-to-trough (PTBase)
Local Baseline Baseline Separation
yes (PTBase + [PTBase + previous
separation])/2
previous local feature’s baseline
separation
no midpoint of local peak and
trough
0
Local baseline and local baseline separation if not last local feature
Baseline identified
peak-to-trough
(PTBase)
Baseline identified
trough-to-peak
(TPBase)
Local Baseline Baseline Separation
yes yes average of PTBase +
TPBase
PTBase - TPBase
yes no PTBase 0
no yes PTBase 0
no no midpoint of local peak
and trough
0
Setting Hysteresis
Hysteresis must be set for all local parameters. The determining factors for a hysteresis value are:
1. The maximum peak-to-peak noise in the waveform
2. The minimum local feature amplitude
The value should be somewhere between the first and second factors to ensure that noise is not
mistaken for a local feature, and that all local features are recognized.
Local Parameters
The local parameters group offers measurements of common disk drive waveform parameters.
Local Parameter Definition
lbase
baseline of local feature
lbsep
separation between peak-to-trough and
trough-to-peak baselines
lmax
maximum value of local feature

LeCroy WaveMaster 8600A Specifications

General

Brand	LeCroy
Model	WaveMaster 8600A
Category	Test Equipment
Language	English